Plasma Flow Measurements on HBT-EP(^*)
Abstract
The measurement system consists of a monochrometer and a double/Mach probe. The wavelength scanning monochrometer views the Carbon-V line (227.09 nm) Doppler shift due to toroidal plasma flow. The monochrometer views two opposite toroidal directions simultaneously. The use of two views allows the calculation of the Doppler shift without an absolute wavelength calibration. A mirror vibrating at 4 kHz scans across a 0.5 nm wavelength region. Wavelength scanning eliminates the need for multiple photomultiplier tubes at each view. The monochrometer and the associated optics sit on a translation table, which allows the viewing of different tangency radii in the plasma. The moveable double/Mach probe can be inserted into the edge of the plasma without degrading the overall experimental performance. This allows the use of the probe in edge flow measurements. The velocity measurements at different locations will be used to determine the shear in the plasma flow. (^*)Supported by U. S. DOE Grant No. DE--FG02--86ER53222
- Publication:
-
APS Division of Plasma Physics Meeting Abstracts
- Pub Date:
- November 1996
- Bibcode:
- 1996APS..DPP..6P33T